a family of North American Indian languages, including Caddo, Pawnee, and Arikara
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'Caddoan'
coined (1891) by J. W. Powell < Caddo